Means for operating elevator-hatchways



3 Sheets-Sheet 1;

(No Model.) r

' F. K. PASSETT.

MEANS FOE OPERATING ELEVATOR HVATCHWAYS.

No. 374,243. Patented Dec. 6, 1887.

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3 Sheets-Sheet 2.

(No Model.)

P. K. FASSET'T;

MEANS EOE OPERATING ELEVATOR HATGHWAYS.

Patented Dec. 6, 1887.

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Patented Dec. 6, 1887.

F. K'. FASSETT.

(No Model.)

MEANS FOR OPERATING ELEVATOR HATGHWAYS. No. 374,243.

W zfnesses:

ilNITED STATES PATENT UEEICE.

FRANCIS K. FASSETT, OF ST. LOUIS, MISSOURI.

MEANS FOR OPERATING ELEVATOR-HATCHWAYS.

SPECIFICATION forming part. of Letters Patent No. 374,243, datedDecember 6, 1887.

. l s Application filed June 6, 1887. Serial No. 240,385. (No model.)

To all whom it may concern.-

Be it known that I, FRANCIS K. FASSETT,Of St. Louis, Missouri, have madea new and useful Improvement in Means for Operating Elevator-Hatchways,of which the following is a full, clear, and exact description.

The improvement relates to the hatch-doors, to the balancing, andto themode of locking and of opening and closing them, all substantially as ishereinafter described and claimed, and as illustrated in the annexeddrawings, making part of this specification.

Figure 1 is a view in perspective, from be neath, of the improvedmechanism. Fig. 2 is a vertical cross-section on the line 2 2 of Fig. 3;and Fig. 3 is a side elevation, the hatchdoors being opened and theelevator cage or car beingabout to pass them.

The same letters of reference denote the same parts.

In Fig. 2, A represents a lower floor, and B an npperfloor, of abuilding to which the improvement is applied.

0 O represent the hatclrdoors in the lower floor, and C G the hatchdoorsin the upper floor. The doors are hinged at c to enable them to swingdownward in opening and upward in closing, substantially as shown. IThey are balanced and also looked in an open and in a closed position inthe following manner:

1) represents a shaft journaled in bearings 61? on the underside ofthedoor. An arm, E, leads from the door to the shaft. The arm is pivoted ate to the door, near the edge e, and at its opposite end the arm isfastened rigidly to the shaft D, and between its points of connectionwith the door and shaft, respectively, the arm is jointed at e to enablethe arm at its joint to be turned upward or downward, as indicated inthe different positions of the arm in Fig. 2. The shaft D is alsoprovided with a weighted arm, F. Unless the shaft is rotated, the doorcannot be opened, for the arm E acts as a brace and prevents theopening, and, owing to the joint 6 and to the joint seen in the lowerpart of Fig. 2 being, when the door is closed, slightly above a linedrawn through the two ends of the arm, and to the then position of theweighted arm F,thedoor is not only braced but locked, and as long as theweighted arm remains at a level above the lowest position into which itcan turn it tends to holdthe doorarm E in a locked position. Aprojection, c,upon the door prevents the arm-joint e from rising toohigh. The only way, then, to open the door is to depress thejoint 6below a line drawn through the two ends of the arm E. Such lineisindicated by the broken line m, Fig.2. This the depressing of thejoint) is accomplished by rotating the shaft D, and after the joint hasbeen thus depressed the weighted arm acts to balance the door in almostall of the positions into which it may be opened; but if the door isopened wide, so as to bring the weighted arm past a perpendicular, asindicated by its position in the-upper part of Fig. 2, it (the door)becomes locked in its open position.

The automatic opening and closing of the hatch-doors is effected inthefollowing man ner:

G represents a toothed segment attached to each ofthe shafts D. Itengages and operates in conjunction with a rack-bar, H-that is, thelower right-hand segment G, Fig. 2, engages with the rack-bar H, thelower left-hand segment G engages with the rack-bar H, the up perright-hand segment G engages with the rack-bar H and the upper lefthandsegment G with the rack-bar H. The rack-bars work horizontally insuitable guides, h, Fig. 2, and their inner ends, h, cross each other atthe center of the elevator, and are respectively provided with anupright bar, h h

The elevator cage or car I is of the usual construction,saving as it ismodified by the present improvement, and it is adapted to be workedupward and downward in the ordinary manner between the guides J J. It isprovided with the peculiar system of deflectors shown at K K, therebeing a system, K,which coacts'with the raclcbars H and H and a similarsystem, K, which coacts with the rack-bars Hand H A strip, k, at theupper end of the car inclines outward and downward from the center ofthe side of the car, as shown, and it is then extended verticallydownward at k, and then at it inclines inward and downward toward thecenter of the side of the car, as shown, but the lowest portion, k, is,as seen in Fig. 1, narrower than the upper portions, 70 k. Thereisanother strip, 70 extended parallel and of the same width with theportion k. From the lower end of the strip a strip, It", extendsvertically downward parallel with the strip 70, and at k it connectswith the strip 70. The strips k k k are of the same width. Anotherstrip, 75*, of the width of and extended parallel with the strip 7c,completes the system K. A similar set of strips, but reversed, savingthe vertical portions, composes the system K. At the upper end of eachof the uprights If h is a roller, L, and at the lower end of each of theuprights is a roller, M. This lower roller does not project as far intothe plane of the deflector as does the roller L. As the car iselevated,the strips 7c 7r, respectively, encounter the rollers M M, inconsequence of which the rack-bars are drawn toward each other,and thesegments and shafts thereby rotated and the hatch-doors opened. By thistime the rollers M M have encountered the vertical strips kk, by reasonof which the doors are held open until the rollers M M have passed thestrips 70 7c. The rollers L L now come against the outer side of thevertical strips 76* If, and the doors in consequence are held open untilthe platform of the car shall have passed upward above the floor. Therollers M M now come against the inner side of the strips 70 7c, and therack-bars in consequenceare moved backward into their originalposition,and the doors are closed. In 1 descending the car-deflectorsoperate to reverse the movements of the rollers M L, and the hatch-doorsare opened and closed, as before.

I claim 1. The combination of the hinged doors, the jointed braces, theshafts, the weighted arms, the rack-bar, and segment for rotating theshafts, substantially as described.

2. The combination of the hinged doors, the jointed braces, the shaftsjournaled on the under side of their respective doors, the segments onthe ends of the shafts, and the rack-bars, substantially as described.

The combination of the hinged doors, the jointed braces, the shafts, thesegments, the rack-bars, the car, and the deflectors, sub stantially asdescribed.

4. The combination of the car having the deflectors, constructed asdescribed, with the rack-bars and vertical bars having the rollers,substantially as described.

Witness my hand.

FRANCIS K. FASSETT.

Witnesses:

O. D. MOODY, A. M. EVERIST.

